MockHitTester.cpp - mozsearch

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "MockHitTester.h"

#include "TreeTraversal.h"

#include "apz/src/APZCTreeManager.h"

#include "apz/src/AsyncPanZoomController.h"

#include "mozilla/gfx/CompositorHitTestInfo.h"

#include "mozilla/layers/ScrollableLayerGuid.h"

namespace mozilla::layers {

IAPZHitTester::HitTestResult MockHitTester::GetAPZCAtPoint(

    const ScreenPoint& aHitTestPoint,

    const RecursiveMutexAutoLock& aProofOfTreeLock) {

  MOZ_ASSERT(!mQueuedResults.empty());

  HitTestResult result = std::move(mQueuedResults.front());

  mQueuedResults.pop();

  return result;

void MockHitTester::QueueHitResult(ScrollableLayerGuid::ViewID aScrollId,

                                   gfx::CompositorHitTestInfo aHitInfo) {

  LayersId layersId = GetRootLayersId();  // currently this is all the tests use

  RefPtr<HitTestingTreeNode> node =

      GetTargetNode(ScrollableLayerGuid(layersId, 0, aScrollId),

                    ScrollableLayerGuid::EqualsIgnoringPresShell);

  MOZ_ASSERT(node);

  AsyncPanZoomController* apzc = node->GetApzc();

  MOZ_ASSERT(apzc);

  HitTestResult result;

  result.mTargetApzc = apzc;

  result.mHitResult = aHitInfo;

  result.mLayersId = layersId;

  mQueuedResults.push(std::move(result));

void MockHitTester::QueueScrollbarThumbHitResult(

    ScrollableLayerGuid::ViewID aScrollId, ScrollDirection aDirection) {

  RecursiveMutexAutoLock lock(GetTreeLock());

  LayersId layersId = GetRootLayersId();  // currently this is all the tests use

  // First find the scrolalble node, to get the APZC.

  RefPtr<HitTestingTreeNode> scrollableNode =

      GetTargetNode(ScrollableLayerGuid(layersId, 0, aScrollId),

                    ScrollableLayerGuid::EqualsIgnoringPresShell);

  MOZ_ASSERT(scrollableNode);

  AsyncPanZoomController* apzc = scrollableNode->GetApzc();

  MOZ_ASSERT(apzc);

  // Now find the scroll thumb node.

  RefPtr<HitTestingTreeNode> scrollThumbNode =

      BreadthFirstSearch<ReverseIterator>(

          GetRootNode(), [&](HitTestingTreeNode* aNode) {

            return aNode->GetLayersId() == layersId &&

                   aNode->IsScrollThumbNode() &&

                   aNode->GetScrollbarDirection() == aDirection &&

                   aNode->GetScrollTargetId() == aScrollId;

});

  MOZ_ASSERT(scrollThumbNode);

  HitTestResult result;

  result.mTargetApzc = apzc;

  result.mHitResult = {gfx::CompositorHitTestFlags::eVisibleToHitTest,

                       gfx::CompositorHitTestFlags::eScrollbarThumb};

  if (aDirection == ScrollDirection::eVertical) {

    result.mHitResult += gfx::CompositorHitTestFlags::eScrollbarVertical;

  InitializeHitTestingTreeNodeAutoLock(result.mScrollbarNode, lock,

                                       scrollThumbNode);

  mQueuedResults.push(std::move(result));

}  // namespace mozilla::layers